No, there are more types of particles beyond electrons and protons. Electrons and protons are indeed two of the fundamental particles in the Standard Model of particle physics, but there are many other types of particles that exist.
The Standard Model describes three fundamental particles called "fermions," which are particles that make up matter. They are divided into two categories: quarks and leptons. Electrons are a type of lepton, while protons are composed of quarks (specifically, two up quarks and one down quark).
In addition to electrons and protons, there are several other types of leptons and quarks. The leptons include the electron's two cousins: the muon and the tau particle, each with their corresponding neutrinos. The quarks consist of six different types: up, down, charm, strange, top, and bottom.
Moreover, particles can also have antiparticles, which have the same mass as their corresponding particles but opposite electric charge. For example, the antiparticle of an electron (negatively charged) is called a positron (positively charged).
Apart from these fundamental particles, there are also force-carrying particles known as "gauge bosons" that mediate the fundamental forces in the universe. For example, photons are the gauge bosons associated with the electromagnetic force.
In summary, the world of particle physics encompasses a wide variety of particles beyond just electrons and protons. The Standard Model provides a framework to understand these particles and their interactions, but there may still be more particles yet to be discovered or understood beyond the current understanding of 2023.